A viral number sequence puzzle challenges players to find the next number in “2, 6, 12, 20, 30, ?”. Test your analytical ...

An optical illusion challenges viewers to find a subtle anomaly within a repeating pattern of the letters HJKL. The brain's tendency to overlook details in consistent patterns makes spotting the rogue ...

Being able to guess the correct pattern in a puzzle shows that your cognitive and mental abilities are sharp. Such puzzles help in improving problem-solving skills, boost your memory, promote ...

This brain teaser challenges you to find the missing number in a sequence following a doubling pattern. Starting with 4, the sequence grows with differences that double each time. The answer is 97, ...

A tricky brainteaser is likely to put even the sharpest of eyes to the test. Online bingo experts at tombola have crafted a tough brainteaser that only one in four can solve. The aim of the ...

We employ a polychotomous version of Mokken Scaling Analysis to create an improved measure of government respect for a subset of human rights known as physical integrity rights. The scale we produce ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 87, No. 2 (1990), pp. 826-830 (5 pages) We have developed a method for rapidly finding patterns of conserved amino ...